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SubjectRe: 2.5.59mm5, raid1 resync speed regression.
David Mansfield wrote:

>Hi Andrew, list,
>
>I'm booting 2.5.59mm5 to run a database workload benchmark that I've been
>running against various kernels. I'll post those results if they are
>interesting later, but I did notice that the raid1 resync is proceeding at
>half the speed (at best) that it usually does (vs. 2.5.59 that is).
>
>It currently at about 4-8 mb/sec (and falling as resync progresses),
>usually at 12-15 mb/sec.
>
>System is SMP 2xPIII 866mhz, 2GB ram, raid1 is two 15k U160 (running only
>an Ultra speed :-( because the onboard controller sucks) SCSI disks, same
>channel on aic7xxx.
>
>Kernel is 2.5.59-mm5 compiled with gcc version 2.96 20000731 (Red Hat
>Linux 7.3 2.96-112)
>
>David
>
Thanks for the report. Please do post any results you get.

What disk workload exactly does a RAID1 resync consist of?

Nick

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